---

# awk 1 prints every line and thereby normalizes source files whose last line lacks a newline.
- name: Check the source files of {{ _concat_dest }}
  ansible.builtin.stat:
    path: "{{ item }}"
  register: _concat_stat
  loop: "{{ _concat_sources }}"

- name: Read the source files of {{ _concat_dest }}
  ansible.builtin.command:
    cmd: "awk 1 {{ _concat_sources | join(' ') }}"
  register: _concat_content
  changed_when: false
  when: _concat_stat.results | rejectattr('stat.exists') | list | length == 0

- name: Write {{ _concat_dest }}
  ansible.builtin.copy:
    content: "{{ _concat_content.stdout }}\n"
    dest: "{{ _concat_dest }}"
    owner: "root"
    group: "root"
    mode: "{{ _concat_mode }}"
  when: _concat_content is not skipped